Gupta, K CJoshi, J VAnklesaria, P SShah, R SSatoskar, R S1988-06-012009-05-301988-06-012009-05-301988-06-01Gupta KC, Joshi JV, Anklesaria PS, Shah RS, Satoskar RS. Plasma rifampicin levels during oral contraception. Journal of the Association of Physicians of India. 1988 Jun; 36(6): 365-6http://imsear.searo.who.int/handle/123456789/88149engContraceptives, Oral, Combined --pharmacologyEthinyl Estradiol --pharmacologyFemaleHumansNorethindrone --analogs & derivativesRifampin --pharmacokineticsJournal Article